Governor.



E. R. HEWITT.

1 GOVERNOR.

APPLICATiGN FILED DEC. 23, 1-914.

1, 148,81 Patented July 27, 1915.

2 SHEETS-SHEET 1-.

WITNESSES INVE/VTOI? ,7 AG M, 5

nDwAnD n. HEWITT, or MIDVALE, new JERSEY, assumes no rmnnnArronnm MOTORCOMPANY, ornnw roan, n. Y., A oonPOnM-ron or DnLAwAnE.

GOVERNOR.

Application filed December 23, 1.914. Serial No. 878,808.

To all whom it may concern:

Be. it known that I, EDWARD R. HEWITT,

a citizen of the United States, and residence being had to theaccompanying drawings, which form a part hereof.

This invention relates to governors and is designed primarily withreference to the use thereof in connection with internal combustionmotors for automobiles, motor boats,

etc.

Governors hitherto known have not been entirely satisfactory in thecommercial use of smaller internal combustion engines, by reason oftheir somewhat involved organization, their dependence upon springs,their relative bulkiness, their susceptibility to injury andderangement, and their expensiveness.

The present invention has for its principal object to overcome the obections noted and to provide a governor wh ch shall 1nclude few movingparts, occupya minimum space, be of simple construction, easy ofadjustment or repair, and inexpensive as regards both the initial costand the cost of installation.

In realizing the objects of the invention, a novel principle ofoperation is employed and the 'usual toggle movements or bodilymovements of supporting shafts for elements of the governor, areavoided.

The improved governor includes, briefly stated, governor balls which aremounted on any available shaft, the speed of which is dependent upon thespeed of the motor, and which governor balls are subject, in a wellknown manner, to the action of centrifugal force to determine theirpositions radially with respect to their supporting shaft. Thesegovernor balls have formed thereon, cam surfaces, with which engage asli'dable sleeve, mountedeon any available shaft and in juxtaposition tothe governor balls. This slidable "sleeve is operatively connectedthrough slidable links and levers with the valve, timen, or otherelement to be controlled. It is in the relationship of the governorballs to the sliding sleeve, wher eby radial movement of the balls istranslated into an axial movement of the sleeve'and thereby transmittedto the controlled element, that the gist of this invention resides. Onepreferred embodiment of the invention is illustrated, byway of example,in,

the accompanying drawings, in which- Figure '1 is a fragmentary view invertical section taken through the forward end of an internalcombustion-motor equipped with the improved governor. Fig. 2 is a viewin front elevation of the motor shown in Fig. 1, part of the front plateof the motor housing being broken away to show the relationship of theparts of the governor to each other. Fig. 3 is a View partly in plan andpartly in horizontal section taken on planes indicated by the brokenline 3-3 of Fig. 2 and indicating particularly aportion of the shaft tobe controlled by the governor. I

In the drawings only so much of the housing a of an internal combustionmotor is illustrated, as. is necessary for a clear understanding of theconstruction and operation of the improved governor, and a convenientSpecification of Letters Patent. 7 Pmflgmmfl July 2'? 1931115,

disposition thereof with respect to the other parts of the motor.. Asthis description proceeds, it will be evident that the inven- I tion isnot to be limited to the character of the motor with which the governoris used, nor to the place of mounting of the governor within the enginecasing. In the illustrated convenient to mount the governor at theforward end of the engine casing a, and the cam shaft 6, or an extensionthereof, formcamshaft b is also secured a spider e hav- Y ing radialarms 6' and e formed therewith. This spider may be fixed to the camshaft b in any convenient manner although, as illustrated, it may befound desirable to thread it removably on to the camshaft as by thethreads indicated at 15 Where only two governoy/weights or balls areemployed, as

85 embodiment, however, it has been found dial sliding movement of theweights. Normally, it will be observed from Fig. 2, the weights f areheld at their innermost positions on the respective arms 6', 6 by meansof suitable springs g operatively connected therewith. Outward movementof the .weights, under the influence of centrifugal action, will be madeagainst the action of the springs g.

Carried on the weights 7, or formed integral therewith, are suitable camsurfaces,

- indicated generally at f, the said surfaces being inclined generallywith respect to the axes of the governor weights f and being reverselydisposed with respect to each other.

On. the forward extension of the cam shaft Z), or on any other availableshaft, is mounted loosely a sleeve h on which is formed a conical ortapered flange h, the whole constituting in. effect, a cup-like member,the flaring mouth of which extends toward the cam surfaces, f of thegovernor weights f, and the rim or edge of which engages said surfaces.In order to reduce the friction between these engaging surfaces, thesaid edge or rim of the flange it may be rounded. In engagement with thesleeve 71.,

, or a suitable bearing collar 2', carried thereon, is a forked leveris, journaled as at 70 in suitable bearings Z, carried by the frontplate a of the engine casinga. The forked lever 70' is formed with asingle arm 72 extending on the other side of the journaled bearing 70and away from the forked member la, and: the free end of said rim is en;larged as at 70 to constitute an ample abutment for a spring pressedplunger Z, which may be termed generally the controlled element, itbeing understood that this rod may be connected with the butterflyvalve,'the timer, or any other part by which the speed of the motor maybe controlled. The function of the spring Z by which the rod Z is heldin engagement with the enlargement 72 of the forked lever is, is tomaintain the edge or rim of the flange k in constant engagement withthecam surfaces f of the governorballs 7.

In operation, rotation of the crank shaft 0 is transmitted to the camshaft 6 through the meshing gears 0 and b, the cam shaft carrying withit the spider e. The radial positions of the governor balls on theirrespective arms 6 and 6, will. of course, be dependent upon the speed ofrotation of the cam shaft 6, the tension of the springs g being fixed.As the governor balls move outwardly, under centrifugal action, alongthe arms e and e the cam surfaces f will ride along the edge or rim of.the flange h of the sleeve 71., so that the sleeve it will bemoved'axially along the cam shaft I), such axial movement beingtransmitted through the forked lever 7; to the spring pressed controlledrod or element Z, the movement of "this rod bringing about the desiredcontrol of the motor speed, in a manner well known and hereinbeforesuggested. Conversely, if the speed of the motor decreases so as topermit the springs g to draw the governor weights f toward each other,the cam surfaces f are moved relative to the flange h of the sleeve 72.so as to permit the latter to be pressed to the right, as viewed in Fig.1, under the action of the spring Z, such movement permitting acorresponding movement of the cQIItI'OllECl rod Z, and a change in themotor condition.

alt is to be noted particularly that the governor control in accordancewith the present invention, is effected by the conjoint action of theradially movable governor balls and the axially slidable sleeve. Neitherof these elements is fixed, so the degree of sensitiveness of control isapproximately twice that present in known governors. Further, by makingit unnecessary for the supporting shaft of any one of the governorelements to be movable, space is economized, toggle actions areeliminated, the number of elements is reduced, and the cost of thegovernor is lessened. These advantages are all realized withoutsacrificing any of the desirable features of known governors and,indeed, a more sensitive control is secured along with a certainty ofinvariable operation.

Changes in construction of the improved governor and rearrangement ofthe parts thereof, both with respect to each other, and to the motorelements, may be made, but all such changes and rearrangements are to bedeemed within the spirit of this invention provided they fall within thescope of the appended claims.

I claim as my invention:

1. A governor including weights, a shaft on which the weights aresupported, the weights being subjected to centrifugal force by therotation of the shaft, cams formed on the weights, and an element to becontrolled by the governor, said element being operatively engaged withthe cams on the Weights, whereby movement of the weights causes acorresponding movement of the controlled element through the action ofthe cams 2. A governor including weights, a shaft on which the weightsare carried and with respect to which they are radially movable undercentrifugal action, a sleeve slidable axially and alonga line at rightangles to the axes of said weights, cams formed on the weights and withwhich the sleeve engages 'whereby movement of the weights causes 7controlled element in engagement with the ment of the weights istranslated into axial movement of the sleeve, and a controlled elementin engagement with the sleeve.

4. In combination with a driven shaft, a governor mounted thereon andincluding weights movable radially with respect there to, cams formed onthe weights, a cup shaped sleeve slidably mounted on said shaft andhaving itt edge'engaged with the cams, whereby radial movement of theweights causes axial movement of the sleeve, and a sleeve.

5. In combination with a driven shaft, a spider carried thereby andprovided with radially extendin arms, weights mounted on said arms and sidable under centrifugal action, springs operatively connected to said 7weights to oppose such sliding movement, 1 cams formed on the weights, asleeve mounted slidably on said shaft and formed with a circular flange,the edge of which engages with said cams, whereby radial movement of theweights causes an axial movement of the sleeve, and a controlled elementin engagement with thesleeve.

6. In combination with a driven shaft of a motor, a governor mountedthereon and ineluding Weights movable radially with respect thereto, asleeve slidably mounted on said shaft, cams formed on the weights andengaged operatively by said sleeve, whereby radial movement of theweights causes an Y axial movement of the sleeve, a lever connected withsaid sleeve, a controlled element engaged by the lever, and a spring tohold the sleeve against the cams. a

This specification signed and witnessed November, A. 1)., 1914:.

EDWARD R. HEWITT. Witnesses:

M. Fnnvs, H. M. HENDRICKSON.

Gopiee of thin patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0

